linux-kernel - [PATCH 08/10] drm/panel: raspberrypi-touchscreen: Prevent double-free

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Message-Id: <20210720134525.563936-9-maxime@cerno.tech>
Date:   Tue, 20 Jul 2021 15:45:23 +0200
From:   Maxime Ripard <maxime@...no.tech>
To:     Robert Foss <robert.foss@...aro.org>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Daniel Vetter <daniel.vetter@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Sam Ravnborg <sam@...nborg.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Maxime Ripard <maxime@...no.tech>,
        Neil Armstrong <narmstrong@...libre.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH 08/10] drm/panel: raspberrypi-touchscreen: Prevent double-free

The mipi_dsi_device allocated by mipi_dsi_device_register_full() is
already free'd on release.

Fixes: 2f733d6194bd ("drm/panel: Add support for the Raspberry Pi 7" Touchscreen.")
Signed-off-by: Maxime Ripard <maxime@...no.tech>
---
 drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
index 6f2ce3b81f47..462faae0f446 100644
--- a/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
+++ b/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c
@@ -447,7 +447,6 @@ static int rpi_touchscreen_remove(struct i2c_client *i2c)
 	drm_panel_remove(&ts->base);
 
 	mipi_dsi_device_unregister(ts->dsi);
-	kfree(ts->dsi);
 
 	return 0;
 }
-- 
2.31.1